Programming :: Bash Reading Multiple Files Line By Line?

Mar 8, 2011

I have a set of files containing data that I need to re-arrange into one single property list.

The files that I have look like this:

Code:
# cat uk
<string>10</string>
<string>11</string>
...
<string>29</string>

[Code]....

So the lines in the files match up but I haven't found a way of reading several files line by line.

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Programming :: BASH: Each Line Of Multiple Text Files Gets Added To One Line?

Sep 12, 2010

I currently have 3 files with floating point data that I wish to have in a single file with the format:

Code:

F1 F1 F3 Output
a1 b1 c1 a1 b1 c1
a2 b2 c2 a2 b2 c2
a3 b3 c3 a3 b3 c3
a4 b4 c4 a4 b4 c4

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Programming :: Line By Line Reading And Writing In Bash?

Nov 29, 2010

I have a text file (myfile.txt) with columns a,b,c.

123 2 23
124 2 24
125 2 22

[code]...

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Programming :: Error During Reading A File Line By Line In C?

Mar 6, 2010

I have a code over there. It reads a line from file and converts contents of it to double.

Code:
/*
* fileRead.c

[code]...

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Programming :: Programing - Reading File Line By Line Then Char By Char In Each Line

May 29, 2010

I've never programed shell scripting.

Code goes like so:

I simply want to read a file "data.txt" line by line Then char by char and add them into a result var. The file is supossed to always contain numeric values

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Programming :: Compare Two Files Line By Line And Print The Line Which Is Same?

May 30, 2011

I am trying to write a program in C which compares two files and prints the line that is equal.

Here file1.txt has

and file2.txt has

Note: file2.txt consist of only a single string where as file2.txt has multiple lines. Actually im comparing two files with md5sum values.

Here is the code but it compares only first line of files..but it should compare the whole file1..and sorry iam a beginner in C can any1 sujest some modification to this code so that..it can compare file2 with entire file1

Quote:

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Programming :: Bash: Read A Text File Line By Line?

Jul 7, 2011

bash 3.1.17(2) I'm trying do write a shell script which must operate on each line of an ASCII text file. So, all the code must be inside a loop, and inside the loop, the first thing should be to read the next line from the file. I have the bash read command. But it reads from stdin. Any way to make read from a file?

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Programming :: BASH Sort List By End Of Line To X Position In Each Line?

Aug 18, 2010

I'm trying to make another file annotation script a little speedier than it has been by the up-until-now proven method of checking the last four characters in a filename before the "dot" (eg .jpg, .psd) against a list of known IPTC categories and Exiv2 command files. It occurred to me that if one script generated a list of files in directory foo, and the same or another script sorted that list by that four-letter tag,then that list could be used(instead of a for/do/done loop on the real files in the folder) by the command-file-matching script to "vomit out" which annotator file would go with file nastynewfile.jpg, f'r'instance. The script I had been using for this task looks like this:

Code:

while read 'line';
do
sp=$(echo $line)
vc=$(echo $sp | cut -d"," -f1)
cv=$(echo $sp | cut -d"," -f2)

[code]....

Where I seem to be stuck is with how to sort the lines in templist, which may be any number of different lengths, from back to front. sort -k looked promising, except it seems only to work the other way round. I thought of invoking a

Code:

q=$(expr length $line); echo $q
n=$[q-8]; echo $n

kind of thing, but that presented the problems of how to sort by those, how to tell sort where to find them (grep?) and how to "stitch them back in" to the original list, which is what I want to sort in the first place.

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Programming :: Bash Wait For One Line To Finish Before Going To The Next Line?

Jan 10, 2011

I have a wrapper script called MAIN.sh that runs several other script. It looks like this:

Code:
#! /bin/sh
script1.sh

[code]...

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Programming :: Split Multi Line Record Into Multiple Files With Awk?

Nov 11, 2009

I have a large file 'NS0923.csv' with data like the following. There are two records in this multi-record sample.

Code:

E60898,4578910,03/06/09,BEN BOYD RD,61,82,,,127,3,,52000.3046.001,3155,4.00,,PLT,1356,1.00,05/06/09,Y,Y,0551
,,,,,,,,,,,,4057,1.00,CLEAN CAR SHARE SIGN,LAB,0551,1.00,,,,

[code]....

2. I still have to create a file 'transaction.csv' that should retrieve data from $13 - $15 with the identifying column $1. Required output:

Code:

E60898,4057,1.00,CLEAN CAR SHARE SIGN

3. And finally another file 'quantity.csv'. Retrieving data from $16 - $18 with identifier $1. Required output:

Code:

E60898,PLT,1356,1.00
E60898,LAB,0551,1.00
E60898,LAB,3065,1.00

[code]....

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Programming :: Open Two Text Files - Read Them Line By Line And Update Parameters Of The 3rd File ?

Oct 18, 2010

I have two txt files containing x and y coordinates: xcoord.txt & ycoord.txt. I need to open them; read them line by line to get each coordinate; then each time I need to update Xs and Ys parameters inside another file called "dc.in" with the grabbed values.

Finally each time I need to run two exe files ( dc_2002 and st_vac) and produce corresponding output for each Xs and Ys ( dc.in is an input file for this exe files)

I have written the following code but it does not work:

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Programming :: Keeping The Separate Files In Sync Line By Line?

May 5, 2010

I'm extracting data from a xml file writing it to separate files then combining the results as a csv file.The problem is keeping the separate files in sync line by line.When a grep does not action I would like to put in a blank line or something to keep the lines in order.When the "<title>" is missing as in as in the first"<programme </programme>" that's where I need somethingto write to the file as dummy data to increment the line

here's the data

Code:

<programme channel="15552.dvb.guide" start="20100504200000" stop="20100504204000">
<category>Show / Game Show</category>
</programme>
<programme channel="14498.dvb.guide" start="20100504200000" stop="20100504203000">

[code]....

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Programming :: Using Python To Merge Two Text Files Line For Line

Jul 6, 2010

I'm a bit new to Python programming and hoped that someone might be able to help with a problem I'm having. What I essentially want to do is to combine two text files line for line. I know how to do this in a bash script so to give you a better idea here's the code for that:

Code:

This is basically for adding on values to the end of a CSV file that uses ';' as the delimiter. So say file1 said:

And file2 said:

Then running this command would create merged_file1_and_file2 which would be:

The code I'm using at the moment is:

Code:

As I'm sure any experienced python programmer will see, this prints out the first line of the file "csvraw" and then all of the lines of "stamps" and then the remainder of "csvraw".

What I'd like to do is something like: (pseudo code, I know it's not python ;-))

Code:

Is this possible? I've tried googling and my Python Pocket Reference hasn't been much help. I've looked at pickling but that doesn't seem appropriate.

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Programming :: Copy And Replacing Specific Line From File1 To File2 Line By Line

Mar 22, 2011

I have two files, file1.traj and file2.traj. Both these files contain identical data and the data are arranged in same format in them. The first line of both files is a comment.

At line 7843 of both files there is a cartesian coordinate X, Y and Z ( three digits ). And at line 15685 there is another three digits. The number of lines in between two cartesian coordinates are 7841. And there are few hundreds of thousands of lines in a file.

What I need to do is copy the X Y Z coordinate (three digits) from file1.traj at line 7843 and paste into file2.traj at the same line number as in file1.traj. The next line will be 15685 from file1.traj and replace at line 15685 at file2.traj. And I dont want other lines (data) in file2.traj get altered. This sequence shall be going on until the end of the file. Means copy and substitude the selected lines from file1.traj into file2.traj.

I tried to use paste command but I cant do for specified line alone.

Here i showed the data format in the file. I used the line number for clarity purpose.

Code:

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Programming :: Access A File Line By Line, And Check The Length Of Each Line.

Feb 13, 2011

I want to access a file, and check the length of every line.After, i want to check and replace all lines with length over 10 characters, with a message.Does anyone have a clue on that?

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Programming :: Insert Line Using Sed Or Awk At Line Using Line Number As Variable

Jul 25, 2011

I want to insert a line at a particular line number using sed or awk. where line number is not fixed and is in form of variable.

I want to use variable in sed or awk command.I tried something like below, but no luck.

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Programming :: Reading Command Output By Line In Bourne Script?

Feb 13, 2010

I have a command which generates the following output:

Code:
$ sudo vnconfig -l
vnd0: not in use

[code]...

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Red Hat / Fedora :: Bash - Echo Multiple Numeric Values On One Line

Aug 9, 2009

I'm trying to get multiple numeric valued version information into a variable, all on the same line. I want for example $VERSION=3.1.0.01.002. I'm trying to pull seperate values from the file named version.properties, wherein the file contains;

patch.rel.num=0
sqa.num=01
major.rel.num=3
build.num=002
minor.rel.num=1

So I have the following script:
#!/bin/bash
BUILDVERFILE="version.properties"

PATCH=`grep "patch.rel.num" ${BUILDVERFILE} | awk {'print $1'}`
SQA=`grep "sqa.num" ${BUILDVERFILE} | awk {'print $1'}`
MAJOR=`grep "major.rel.num" ${BUILDVERFILE} | awk {'print $1'}`
BUILD=`grep "build.num" ${BUILDVERFILE} | awk {'print $1'}`
MINOR=`grep "minor.rel.num" ${BUILDVERFILE} | awk {'print $1'}`

P=`echo $PATCH | tr -d .=[:alpha:]`
S=`echo $SQA | tr -d .=[:alpha:]`
MA=`echo $MAJOR | tr -d .=[:alpha:]`
B=`echo $BUILD | tr -d .=[:alpha:]`
MI=`echo $MINOR | tr -d .=[:alpha:]`

VERSION=$MA.$MI.$P.$S.$B
echo $VERSION #

I end up with the value of .002 ?? Seems like it's only getting the last portion because if I run the script thru "bash -x" I get:
...
+ VERSION=$'3
.1
.0
.01
.002
'
+ echo $'3
.1
.0
.01
.002
'
.002

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Programming :: Bash: Printing The Line Number In Bash Script?

Feb 4, 2011

I would like to know how do I print the line # in a script. My requirement is, I have a script which is about ~5000 lines long. If there are any errors happen I just exit. And I would like to add the line # of the script where the error happened.

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Programming :: Reading In A Outside Text File And Putting In The String On That Line Into A Char Array That Is Already Allocated?

Mar 29, 2011

Here is the issue. I am reading in a outside text file and putting in the string on that line into a char array that is already allocated.

Code:
int main(int argc, char *argv[])
{

[code]....

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Programming :: Reading Data From Multiple Files?

Mar 17, 2011

I have a folder which includes bunch of folders each having data files in them. [ Folder A has F1, F2 F3 ..... F1000 folders in it, and F1, F2, F3 ... each has about 10 different files named FILE 1, FILE2, FILE3 .... in them.

I am interested in File 1 of each Folder, because that contains the data I need in it. More specifically, that File1 s have a line "ANSWER=..." in them, and i need to get that value of the ANSWER from each file. So doing it by hand is so hard, so I need to write a script that will scan all folders and give me a list of values of eache ANSWERs.

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Programming :: Reading Files In A Directory Using Bash?

Nov 6, 2010

I am trying to write a simple script to list all the files in a directory. The script I wrote was as below where the pdb_files is a directory and all the files which I want to list are in that folder.

Code:
files=`ls -F pdb_files/*THERMO*`
for inFiles in $files
do
echo $inFiles

[Code]....

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Programming :: Bash Write To End Of Each Line?

Nov 29, 2010

i have a text file like

abc abc abc abc
abc abc abc abc
--- --- --- ---

i want to add a string xyz to end of each line..

abc abc abc abc xyz
abc abc abc abc xyz
abc abc abc abc xyz
--- --- --- --- xyz
--- --- --- --- xyz

how do i do this in bash?

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Programming :: Awk Multiple Line Search And Replace?

May 1, 2011

I am trying to search and replace a multi line pattern in a php file using awk.The pattern starts with

<div id="navbar">
and ends with
</div>

[code]...

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Programming :: Bash For Loop - All Responses On One Line

Nov 18, 2010

I'm writing a mass snmp toner check which polls any toners available to be snmp polled, however when using a loop statement I get the results on different lines; which sounds good, however the tool I use to check with (nagios) ignores the new lines.

Is there any way I can get the output on one line? Also, I need to raise a fault if any of the toners are below a specific level (with nagios you raise faults with the exit code) - any way I can do this without exiting the loop. Code below with bits and bobs commented out.

Code:
check_ink_levels ()
{
for ID in $INKS
do

[Code].....

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Programming :: Bash - Delete Only One Line From A File?

Apr 9, 2011

I would like to delete a single line from a file that contains many lines passing through the same values ​​as the two parameters. Again, I would like to delete a single line and not all those that contain parameters. How can I make bash?

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Programming :: Line Buffering Using Here Document In Bash?

Jan 22, 2010

I keep time sheet entries at work in an sqlite database called 'timesheet'. I have a shell script called 'today' which queries for all timesheet entries which are less than 24 hours old; it looks like this:

Code:
#!/bin/bash
echo "select datetime(start_time, 'unixepoch', 'localtime'), datetime(end_time, 'unixepoch', 'localtime'), project, site, duration from timesheet where start_time > strftime('%s', 'now', '-1 day', 'localtime');" | sqlite3 ~/.timesheet/timesheet.db

In an effort to make it more readable, I've put the query inside a here document:

Code:
#!/bin/bash
cat | sqlite3 ~/.timesheet/timesheet.db << query
select

[Code]...

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Ubuntu :: Find Multiple Files In The Command Line?

Mar 2, 2010

command line, I have a server for work that I ssh into and I need to be able to find multiple files (they have the leading text just the date identifier changes) and then zip the files (with bzip) them and then finally scp(Secure copy) them to another server.

These files are always in the same directory and this is a daily task and just want to make into a script that I run once I am logged into the remote server.

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Ubuntu :: Move Multiple Files Via Command Line?

Sep 15, 2010

I liked the idea of the "cosmos" screensaver/desktop, but wanted to add my own pictures to the application. I navigated to /usr/share/backgrounds/cosmos and tried to drag and drop. I quickly found that I did not have permission to do this.

I googled my problem and found some command line tutorials telling me to sudo cp. My problem is that I have about 30 pics that I want to move in there, and I don't think I can just move the directory, they have to be in that folder as the pictures themselves.

I don't really feel like typing the cp line multiple times with multiple randomly named image files.

Is there a way to have the command line cp all of my files from one directory to another?

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General :: Search And Replace Line In Multiple Files?

Jul 13, 2010

Hello, I need some help searching through multiple files, finding a line and replacing that line. The line I am searching for is:

password key ******* 1222554

ultimately I want to be able to delete the numbers after the asterisks . my thoughts are to create a script that will search for the line password key ******* and delete it then replace it with password key ******* my files are located in /opt and they are all txt files.

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